Thread: 22-250 Ackley Improved Load info

Greetings Curtis27,
Unfortunately its not that simple. The 2.5% increase refers to possible velocity. As Moa Hunter said in his post above it takes more powder just to equal the standard velocity. If you look at the Nosler data for each cartridge with AR2208 an additional 4 grains of powder was needed to get the extra velocity and almost 3 of those grains just brought the velocity back up to the velocity of the standard cartridge. Nosler got good results with AR2208 and this is likely a better powder for the AI but by all means start with your BM 2 at 35.5 grains and work up but I suspect you may not get much more velocity than standard. You are looking for a little over 3,900 feet per second assuming your barrel is the standard 24 inches. As you said above the AI can shine with the right powders. I suspect it shines most with the heavier projectiles if your barrel twist allows.
I suspect that you may not have a chronograph and to my mind they are an essential tool for any hand loader let alone a wildcat hand loader as you have recently become. If you don't have one see if you can team up with someone who has. I am sure that there is someone in Dunedin that knows more about the .22 - 250 AI than either of us. It's just a matter of finding them. One last thing. If something sounds to be too good to be true with load data then it almost certainly is. Same as any other endeavor.
Regards Grandpamac